Papuan Timhet 



45 



By comparing the summary of ash test with the calorific 

 powers of the charcoals, it will be seen that those woods leaving 

 the least ash produce the greatest amount of heat, thus : — 



EXPLANATION OF PLATES. 



Plate X. 

 Fig. 1. — Experimental apparatus for bending wood. 



Plate XL 



Fig. 2. — Graph showing deflection under cross-bending tests. 



Plate XII. 

 Fig. 3. — Deflectometer designed by Prof. H. Payne. 

 Fig. 4. — Form of tension specimen for wood. 



Plate XIII. 



Photographs illustrating fractures under Beam tests. ^ — Ulabo. 



Plate XIV. 



The same. — Tamanau. 



The same. — Alaga. 



The same. — Madave. 



The same. — Kokoilo. 

 The same. — Ilimo. 



Plate XV. 

 Plate XVI. 



Plate XVII. 

 Plate XVIIL 



Plate XVIX. 



Photograph illustrating compression tests. 



Plate XX. 



Photograph illustrating tension tests. 



